Results 1 to 10 of about 141,752 (120)

Anomalous transient enhancement of planetary ion escape at Mars [PDF]

open access: yesNature Communications
Atmospheric ion escape plays a crucial role in the evolution of planetary climate and habitability. While Mars has been the focus of extensive in-situ spacecraft observations, our understanding of ion escape at Mars has been constrained by single-point ...
Chi Zhang   +19 more
doaj   +2 more sources

MAVEN-based investigation of Martian exobase temperatures: Diurnal and solar cycle variations

open access: yes地球与行星物理论评, 2023
The exobase is a key concept for understanding atmospheric escape and evolution on Mars. With the aid of neutral density data measured via the Neutral Gas and Ion Mass Spectrometer onboard the Mars Atmosphere and Volatile Evolution spacecraft, we ...
Hao Gu   +5 more
doaj   +1 more source

Quantifying the Key Factors Affecting the Escape of Planetary Atmospheres

open access: yesThe Astrophysical Journal, 2023
The habitability of Earth-like planets is an increasingly important subject in astrophysics and in planetary sciences. Atmospheric escape plays a vital role in the evolution of the habitability of Earth-like planets.
J. Luo, H.-Q. He, G.-S. Tong, Jiao Li
doaj   +1 more source

Measuring the electric fields in space

open access: yes地球与行星物理论评, 2021
Measuring electric fields in the space environments of the Earth and other planets helps us to understand the electric field structures and plasma waves in the space.
Kun Li, Jun Cui, Yong Wei
doaj   +1 more source

Helium Atmospheres on Warm Neptune- and Sub-Neptune-Sized Exoplanets and Applications to GJ 436 b [PDF]

open access: yes, 2015
Warm Neptune- and sub-Neptune-sized exoplanets in orbits smaller than Mercury's are thought to have experienced extensive atmospheric evolution. Here we propose that a potential outcome of this atmospheric evolution is the formation of helium-dominated ...
Hu, Renyu, Seager, Sara, Yung, Yuk L.
core   +3 more sources

Self Similar Shocks in Atmospheric Mass Loss Due to Planetary Collisions

open access: yesAtmosphere, 2020
We present a mathematical model for the propagation of the shock waves that occur during planetary collisions. Such collisions are thought to occur during the formation of terrestrial planets, and they have the potential to erode the planet’s atmosphere.
Almog Yalinewich, Andrey Remorov
doaj   +1 more source

XUV-driven mass loss from extrasolar giant planets orbiting active stars [PDF]

open access: yes, 2014
Upper atmospheres of Hot Jupiters are subject to extreme radiation conditions that can result in rapid atmospheric escape. The composition and structure of the upper atmospheres of these planets are affected by the high-energy spectrum of the host star ...
Chadney   +4 more
core   +2 more sources

Species-dependent ion escape on Titan

open access: yesEarth and Planetary Physics, 2019
Cassini observations over the past ten years have revealed that Titan possesses a chemically complex ionosphere. In this study, we investigate the relative contributions of different ion species to the total ion escape on Titan, by dividing all ion ...
Fa-Yu Jiang   +3 more
doaj   +1 more source

Distribution of O+ and \begin{document}${\text{O}}_{\text{2}}^{\text{+}}$\end{document} fluxes and their escape rates in the near-Mars magnetotail: A survey of MAVEN observations

open access: yesEarth and Planetary Physics, 2022
Tailward ion outflows in the Martian-induced magnetotail are known to be one of the major channels for Martian atmospheric escape. On the basis of nearly 6.5 years of observations from the Mars Atmosphere and Volatile EvolutioN (MAVEN) mission, we ...
HengLe Du   +7 more
doaj   +1 more source

Molecular Dications in Planetary Atmospheric Escape

open access: yesAtmosphere, 2016
Fundamental properties of multiply charged molecular ions, such as energetics, structure, stability, lifetime and fragmentation dynamics, are relevant to understand and model the behavior of gaseous plasmas as well as ionosphere and astrophysical ...
Stefano Falcinelli   +7 more
doaj   +1 more source

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